I don't think that's a fair dismissal: you see ads all over media websites because the rates have been plummeting as consumers tune out ads. One main reason why everyone does is that ads are so obtrusive and repetitive, and that's exactly what LLMs change: I'm sure we'll see regular ads on AI apps because the companies have trillions of dollars to repay but advertisers would pay a lot more for openings where they aren't _forcing_ their message as a distraction but are instead able to insert it fairly naturally into a context where the user is engaged.

The entire history of advertising before the web was companies estimating a dollar value on “awareness” when they couldn't measure direct referrals and every business in the world has gotten a lot better at measuring sales since then. It's not going to be transformative but if, say, Toyota got ChatGPT to say their vehicles were a better value than Ford's I suspect they'd be able to tell pretty quickly whether sales were improving relative to the competition and would pay well for that to continue.